The western painted turtle is the largest subspecies of painted turtle, with a shell that can reach approximately 25 centimetres long. It reproduces less often than painted turtles in other regions, although it lays plenty of eggs when it does. Although the eggs hatch in the fall, the hatchlings usually spend the winter hibernating in their nest chamber and emerge the following spring. Young western painted turtles feed mainly on tadpoles, insects, crayfish and snails, graduating to bigger prey like fish and frogs as they get older. To give them the energy they need for foraging and mating, these turtles will bask in the sun several times a day to raise their temperature.